- Spectroscopic study of acetohydroxamic acid (AHA) hydrolysis in the presence of europium. Implications in the extraction system studies for lanthanide and actinide separation
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Acetohydroxamic acid (AHA) has been widely used in the development of reprocessing processes for spent nuclear fuel (SNF) due to its ability to form hydrophilic complexes preferentially with tetravalent metals and to contribute to the control of their oxi
- Sánchez-García, Iván,Bonales, Laura J.,Galán, Hitos,Perlado, Jose Manuel,Cobos, Joaquín
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- Joint production technology of hydroxylamine, hydroxylammonium salt and cyclohexanone-oxime
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The invention discloses a joint production technology of hydroxylamine, hydroxylammonium salt and cyclohexanone-oxime. The material comprises the steps that reaction liquid obtained by raw materials through an ammoximation reaction and a hydrooximation reaction is extracted and separated to obtain an organic phase, the organic phase is prepared into product cyclohexanone-oxime, or part of the organic phase and part of product cyclohexanone-oxime are adopted as raw materials for an oxime hydrolysis reaction to be hydrolyzed, the organic phase in hydrolysis liquid is circulated to return to a oximation reactor, part of an inorganic phase in the hydrolysis liquid is adopted as a raw material to be circulated to return to a hydroxylamine oximation reactor, and the other part of the inorganic phase is prepared into a hydroxylamine aqueous solution and hydroxylammonium salt. The joint production technology of hydroxylamine, hydroxylammonium salt and cyclohexanone-oxime is simple in procedure, the requirement of the ammoximation reaction for the purity of the raw material cyclohexanone and the catalyst performance is lowered, a high quality cyclohexanone-oxime product without cyclohexanone is obtained, the simplification of the downstream caprolactam technology and the improvement of the product quality are benefited, and the hydroxylamine and hydroxylammonium salt product which have high additional value are obtained simultaneously.
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Paragraph 0018; 0036; 0037
(2017/09/26)
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- Depolymerization of Pu(IV) Polymer in 0.5-3 M HNO3 in the Presence of Reductants and Oxidants
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Methods of depolymerization of polymeric Pu(IV) in 0.5-3 M HNO3 in the presence of reductants [hydroquinone, H2O2, hydroxylamine, U(IV)] and oxidants [KMnO4, H2O2 + Fe(NO3)3, Na2S2O8 + catalysts, Co(III)] were studied. The ratios of various oxidation states and complex species of plutonium in such systems were determined by electronic absorption spectroscopy. A mechanism of depolymerization of Pu(IV) by sodium persulfate in 0.5-3 M HNO3 in the presence of Co(II) salts was proposed. The stepwise stability constant of the PuO2SO4 complexes K1 was estimated.
- Ermolaev, V. M.,Zakharova, E. V.,Shilov V. P.
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p. 424 - 428
(2008/10/08)
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- Reactions of ClO3F and Cl2O7 with Some Amines
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The reactions of perchloryl fluoride and dichlorine heptoxide with low-molecular amines containing additional functional groups such as OH, NO2, NH2, or CO, are studied. The reactions of ClO3F and Cl2O7 with these amines proceed in two paths: the formatio
- Titova, K. V.,Loginova, E. N.
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p. 1714 - 1720
(2008/10/08)
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